Cross-Device Object Drag Without Screen Projection

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Solution Overview

Problem

In collaborative office scenarios between multiple terminals like a PC and a mobile phone, the requirement for projecting the mobile phone's interface to the PC for display limits the participation of the mobile phone's hardware capabilities, such as touchscreen and stylus, and occupies display space, reducing usage efficiency.

Innovation Solution

A cross-device object drag method that allows users to shuttle objects between terminals using an input device without projection, enabling hardware capabilities of multiple terminals to participate in collaborative work, using keyboard and mouse sharing technology to transfer objects like texts or files.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the mobile phone interface is projected to the PC display for multi-screen collaboration, then content drag function is enabled between PC and mobile phone, but the mobile phone hardware capabilities (touchscreen, stylus) cannot participate in collaborative office and display space is occupied

Engineering Contradiction:
Improvecontent drag functionVSAvoidhardware capability participation
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent segments the collaborative office functionality into independent modules: projection module for display content sharing, and direct drag module for object transfer. The direct drag module enables hardware capabilities (touchscreen, stylus) to participate independently without requiring full projection, allowing selective activation of specific functionalities based on user needs.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements a universal drag interface that works across multiple terminals (PC, mobile phone, tablet) regardless of their hardware capabilities. The drag-and-drop mechanism is designed to be terminal-agnostic, allowing any terminal with the collaborative software to participate in object transfer, thus enabling hardware capabilities of different terminals to contribute to collaborative office.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If the mobile phone interface is projected to the PC display, then content drag is enabled, but display space of the PC is occupied reducing usage efficiency

Engineering Contradiction:
Improvecontent drag functionVSAvoidusage efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The patent extracts the content drag function from the projection framework, creating an independent direct drag mechanism that operates without requiring the mobile phone interface to be projected. This extraction allows users to transfer objects between terminals while keeping the PC display free for other productive tasks, eliminating the trade-off between drag functionality and display space utilization.

Inventive Principle:
Principle #2Taking out (Extraction)

3Productivity

If projection is not started, then display space is not occupied, but the prerequisite for implementing content drag is not met

Engineering Contradiction:
Improveusage efficiencyVSAvoidcontent drag function
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The patent implements a dynamic collaborative system where the drag functionality adapts to different projection states. When projection is active, full drag functionality is available; when projection is not active, the direct drag module provides alternative drag capability. This dynamic adaptation ensures content drag function is always accessible regardless of projection state, maintaining ease of operation while optimizing display space usage.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20260023478A1Cross-Device Object Drag Method and Device
Publication Date: 2026.01.22 HUAWEI TECH CO LTD
  • US20260023478A1 patent drawing
  • US20260023478A1 patent drawing
  • US20260023478A1 patent drawing

AI summary

A second terminal displays, on a display of the second terminal, an object dragged from a first terminal; the second terminal displays a second cursor on the object; the second terminal receives data of a motion operation that is input by a user by using an input device of the first terminal; and the second terminal displays, on the display of the second terminal based on the motion operation, an animation in which the object moves with the second cursor.